The Atom

  • Period: to

    The Atom

  • Energy levels

    The atom contains protons, neutrons, and electrons.
    Proton= positive charge
    Neutron= neutral charge
    Electron= negative charge
    It was first proposed by early Indian and Greek philosophers.
  • Electrons

    Discovered by J.J Thomson.
    Electrons are negatively charged subatomic particles .
    It was discovered by experimenting with Cathode Rays.
    The mass of an electron is 9.11 x 10 to the negative 31st power.
  • The Nucleus

    The Nucleus
    The Nucleus
    The Nucleus was discovered by Ernest Rutherford.
    As the Gold Foil experiment was being performed, he disovered it.
  • The Proton

    The Proton
    The proton, electron, and neutron
    The Proton of an atom was discovered by Ernest Rutherford in 1918.
    The proton has a positive charge,
    the mass the the proton was 1.6 x 10 to the negative 27th power.
    The proton was discovered in the nucleus
  • The Neutron

    The Neutron was discovered by James Chawick in 1932.
    it has a neutral charge to it, and the mass is slighty larger then the protons.
    It was discovered when James performed a series of experiments. He suggested that the new radiation consisted of uncharged particles of the mass of a proton, he called them neutrons